United States. Federal Highway Administration. Office of Engineering
1998-07-01
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The National Highway Construction Cost Index (NHCCI) is intended as a price index that can be used both to track pure price-changes associated with highway construction costs and to convert current-dollar expenditures on highway construction to real- or constant-dollar expenditures. The NHCCI is intended to replace the Federal Highway Administratio
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The Strategic Highway Research Program developed and coordinated construction of test sections for rigid pavement maintenance throughout the United States and Canada. Test sites included specific test sections for evaluation of the performance of under sealing and joint sealing as maintenance treatments. Each site also included an unsealed control
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In March 1998, the Federal Highway Administration (FHWA) released the FHWA Traffic Noise Model [FHWA TNM (registered trademark)], Version 1.0, a state-of-the-art computer program for highway traffic noise prediction and analysis. Comparisons have shown TNM to agree extremely well with field measured data. To provide analysts with a quick screening
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Knowledge of fundamental traffic flow characteristics of traffic simulation models is an essential requirement when using these models for the planning, design, and operation of transportation systems. In this paper we discuss the following: a description of how features relevant to traffic flow are currently under implementation in the TRANSIMS mi
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This report summarizes the activities and results of a preliminary human factors review for the Intelligent Vehicle Initiative (IVI) program. The objective of the project was to help the U.S. Department of Transportation identify human factors work that needs to be done early in the life cycle of the IVI program to ensure safe and well-engineered v
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This report provides a discussion of the relationship between transportation and global climate change based on peer-reviewed literature and research findings, and an overview of transportation solutions. The report is organized in four primary sections: Inventories of Greenhouse Gas Emissions and Concentrations; Potential Impacts of Global Climate
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The Strategic Highway Research Program's {SHRP) H-106 pothole repair experiment was part of the most extensive pavement maintenance experiment ever conducted. Started under SHRP and continued under the Long-Term Pavement Performance program's Long-Term Monitoring project, it provides valuable data on the performance and cost-effectiveness of variou
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WSPRO, a water-surface profile computation model, can be used to analyze one-dimensional, gradually-varied, steady flow in open channels. WSPRO also can be used to analyze flow through bridges and culverts, embankment overflow, and multiple-opening stream crossings. This user's manual provides guidance for using the WSPRO model and updates a previo
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The Branson Travel and Recreational Information Program (TRIP) in Branson, Missouri, and the I-40 Traveler and Tourist Information System (TTIS) in the I-40 corridor of Northern Arizona are two Field Operational Tests (FOTs) of Traveler Information Services in Tourism Areas funded through the National Advanced Rural Transportation Systems Program.
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The Branson Travel and Recreational Information Program (TRIP) in Branson, Missouri, and the I-40 Traveler and Tourist Information System (TTIS) in the I-40 corridor of Northern Arizona are two Field Operational Tests (FOTs) of Traveler Information Services in Tourism Areas funded through the National Advanced Rural Transportation Systems Program.
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This TechBrief announces the completion of a Federal Highway Administration (FHWA) study that is fully documented in a separate report, LTPP Seasonal Asphalt Concrete Pavement Temperature Models (Publication No. FHWA-RD-97-103). (See report-ordering information on the last page of this summary.)
WesTrack is the Federal Highway Administration's (FHWA) test facility in Nevada for developing performance-related specifications for hot-mix asphalt pavement construction. It is also providing some of the earliest data on the performance of Superpave asphalt mixture designs under high rates of heavy truck loading. When Superpave-designed test sect
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This document assembles best practices and presents practical advice on how to acquire the software components of Intelligent Transportation Systems (ITS). The intended audience is the "customers" - the project leaders, technical contract managers, decision makers, and consultants - who are responsible for one or more ITS systems. The document pres
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This study consisted of testing six projects: three hot-mix asphalt concrete (HMAC) and three portland cement concrete (PCC). The primary objectives were to: (1) determine how current quality control test results vary in construction projects and how this variability affects pavement performance, (2) assess the suitability of current methods of qua
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With the goal of improving future concrete pavement design and construction practices, this project evaluated the performance of 303 inservice concrete pavement sections located throughout North America. An extensive field testing program, consisting of pavement condition surveys, drainage surveys, falling weight deflectometer (FWD) testing, coring
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With the goal of improving future concrete pavement design and construction practices, this project evaluated the performance of 303 inservice concrete pavement sections located throughout North America. An extensive field testing program, consisting of pavement condition surveys, drainage surveys, falling weight deflectometer (FWD) testing, coring
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Determining the impedance for any possible travel choice involves creating a network--a schematic representation of the travel facilities available, associating an impedance with each segment of the network, finding reasonable paths through the network from trip origin points to trip destination points, summing the impedance on each link in a given
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This study was conducted to assess how well some of the existing concrete pavement mechanistic-empirical based distress prediction procedures performed when used in conjunction with the data being collected as part of the national Long-Term Pavement Performance (LTPP) program. As part of the study, appropriate data were obtained from the National I
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